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  2. 8 Telltale Signs You Should Replace Your Fridge - AOL

    www.aol.com/8-telltale-signs-replace-fridge...

    Here are some things you should consider when choosing your new fridge. Energy Usage: Depending on the age of your current fridge, you'll likely lower your energy usage no matter what replacement ...

  3. Energy rating label - Wikipedia

    en.wikipedia.org/wiki/Energy_rating_label

    Appliances and equipment that qualify to carry the energy star mark are generally in the top 25% most energy efficient products. In Australia, the label is used for office equipment and home electronics. New Zealand uses the energy star label for a much wider range of products such as whitegoods, lighting, heating, water heating and windows. [1]

  4. Direct cool - Wikipedia

    en.wikipedia.org/wiki/Direct_cool

    Direct cool is one of the two major types of techniques used in domestic refrigerators, the other being the "frost-free" type. Direct-cool refrigerators produce the cooling effect by a natural convection process from cooled surfaces in the insulated compartment that is being cooled. Water vapor that contacts the cooled surface freezes.

  5. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    In a house without air-conditioning (space heating and/or cooling) refrigerators consume more energy than any other home device. [38] In the early 1990s a competition was held among the major US manufacturers to encourage energy efficiency. [39] Current US models that are Energy Star qualified use 50% less energy than the average 1974 model ...

  6. Coefficient of performance - Wikipedia

    en.wikipedia.org/wiki/Coefficient_of_performance

    The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. [ 1 ] [ 2 ] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs.

  7. Refrigeration - Wikipedia

    en.wikipedia.org/wiki/Refrigeration

    The Fridge Gate method is a theoretical application of using a single logic gate to drive a refrigerator in the most energy efficient way possible without violating the laws of thermodynamics. It operates on the fact that there are two energy states in which a particle can exist: the ground state and the excited state.

  8. EnergyGuide - Wikipedia

    en.wikipedia.org/wiki/EnergyGuide

    Appliance energy labeling was mandated by the Energy Policy and Conservation Act of 1975, which directed the Federal Trade Commission to "develop and administer a mandatory energy labeling program covering major appliances, equipment, and lighting."

  9. Auto-defrost - Wikipedia

    en.wikipedia.org/wiki/Auto-defrost

    A defrost timer taken out of a household refrigerator. The defrost mechanism in a refrigerator heats the cooling element (evaporator coil) for a short period of time and melts the frost that has formed on it. [1] The resulting water drains through a duct at the back of the unit. Defrosting is controlled by an electric or electronic timer.